text: def f():
      [f'{x1}' for x1 in range(10)]
      [[f'{x2}' for _ in range(10)] for x2 in range(10)]
      [[42 for _ in range(10) if f'{x3}'] for x3 in range(10)]
  
      [42 for x4 in range(10) if f'{x4}']
      [42 for x5 in range(10) if [f'{x5}' for _ in range(10)]]
      [42 for x6 in range(10) if [42 for _ in range(10) if f'{x6}']]
  
      [f'{x7}' for _ in range(10) for x7 in range(10)]